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EXT1 pins

 
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MVS



Joined: 20 Jun 2007
Posts: 2

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EXT1 pins
PostPosted: Fri Aug 17, 2007 3:19 pm     Reply with quote
Where can I find out which pins are assigned to INT_EXT, INT_EXT1, and INT_EXT2 for PICs? I've searched through this forum and have only found bits and pieces. Also, I have not found a section in the PIC datasheet that specifically mentions these interrupts.

Can anyone point me in the right direction?
ckielstra



Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands

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PostPosted: Fri Aug 17, 2007 3:40 pm     Reply with quote
You are looking for the INT0, INT1 and INT2 functions, located at pin RB0, RB1 and RB2 respectively.

You didn't mention the PIC model you are using but I'm sure these interrupts are in the datasheet. For example the PIC18F458 datasheet describes the external interrupts in chapter 8.6 'INT interrupts'. The PIC18F8722 datasheet describes them in chapter 10,6 'INTn Pin Interrupts'.
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